[mirror_edk2.git] / UefiCpuPkg / CpuDxe / X64 / CpuAsm.asm

      TITLE   CpuAsm.asm: \r
;------------------------------------------------------------------------------\r
;*\r
;*   Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>\r
;*   This program and the accompanying materials                          \r
;*   are licensed and made available under the terms and conditions of the BSD License         \r
;*   which accompanies this distribution.  The full text of the license may be found at        \r
;*   http://opensource.org/licenses/bsd-license.php                                            \r
;*                                                                                             \r
;*   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
;*   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
;*   \r
;*    CpuAsm.asm\r
;*  \r
;*   Abstract:\r
;*\r
;------------------------------------------------------------------------------\r
\r
    .code\r
\r
;------------------------------------------------------------------------------\r
; VOID\r
; SetCodeSelector (\r
;   UINT16 Selector\r
;   );\r
;------------------------------------------------------------------------------\r
SetCodeSelector PROC PUBLIC\r
    sub     rsp, 0x10\r
    lea     rax, setCodeSelectorLongJump\r
    mov     [rsp], rax\r
    mov     [rsp+4], cx\r
    jmp     fword ptr [rsp]\r
setCodeSelectorLongJump:\r
    add     rsp, 0x10\r
    ret\r
SetCodeSelector ENDP\r
\r
;------------------------------------------------------------------------------\r
; VOID\r
; SetDataSelectors (\r
;   UINT16 Selector\r
;   );\r
;------------------------------------------------------------------------------\r
SetDataSelectors PROC PUBLIC\r
    mov     ss, cx\r
    mov     ds, cx\r
    mov     es, cx\r
    mov     fs, cx\r
    mov     gs, cx\r
    ret\r
SetDataSelectors ENDP\r
\r
END\r
\r
Commit	Line	Data
	1	TITLE CpuAsm.asm: \r
	2	;------------------------------------------------------------------------------\r
	3	;*\r
	4	;* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>\r
	5	;* This program and the accompanying materials \r
	6	;* are licensed and made available under the terms and conditions of the BSD License \r
	7	;* which accompanies this distribution. The full text of the license may be found at \r
	8	;* http://opensource.org/licenses/bsd-license.php \r
	9	;* \r
	10	;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	11	;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	12	;* \r
	13	;* CpuAsm.asm\r
	14	;* \r
	15	;* Abstract:\r
	16	;*\r
	17	;------------------------------------------------------------------------------\r
	18	\r
	19	.code\r
	20	\r
	21	;------------------------------------------------------------------------------\r
	22	; VOID\r
	23	; SetCodeSelector (\r
	24	; UINT16 Selector\r
	25	; );\r
	26	;------------------------------------------------------------------------------\r
	27	SetCodeSelector PROC PUBLIC\r
	28	sub rsp, 0x10\r
	29	lea rax, setCodeSelectorLongJump\r
	30	mov [rsp], rax\r
	31	mov [rsp+4], cx\r
	32	jmp fword ptr [rsp]\r
	33	setCodeSelectorLongJump:\r
	34	add rsp, 0x10\r
	35	ret\r
	36	SetCodeSelector ENDP\r
	37	\r
	38	;------------------------------------------------------------------------------\r
	39	; VOID\r
	40	; SetDataSelectors (\r
	41	; UINT16 Selector\r
	42	; );\r
	43	;------------------------------------------------------------------------------\r
	44	SetDataSelectors PROC PUBLIC\r
	45	mov ss, cx\r
	46	mov ds, cx\r
	47	mov es, cx\r
	48	mov fs, cx\r
	49	mov gs, cx\r
	50	ret\r
	51	SetDataSelectors ENDP\r
	52	\r
	53	END\r
	54	\r